(css)el-tag标签，el-select多选框，el-cascader级联选框自定义样式

---

css:

:root {
	--button-color: #065de0;
}

// 标签
.tagNew {
    margin-right: 20px;
    border-radius: 20px;
}

.el-tag.el-tag--info {
    background-color: var(--button-color);
    border-color: var(--button-color);
    border-radius: 20px;
    color: #fff;
    .el-tag__close {
        color: #fff;
    }
}

// 多选框
.el-select .el-tag__close.el-icon-close {
    background-color: var(--button-color);
} 

// 级联
.el-cascader__tags .el-tag .el-icon-close {
    background-color: var(--button-color);
}

1.标签：

<el-tag
  v-for="(item,index) in formInline.batchNumber"
  :key="index"
  :label="item"
  :name="item"
  closable
  class="tagNew"
  effect="dark" //
  color="#065de0" //
  size="mini"
  @close="handleClose(item)"
>{{ item }}</el-tag>

2.多选框

<el-form-item label="选择：">
  <el-select
    v-model="formInline.inputItems"
    placeholder="选择字段"
    multiple
    collapse-tags
    filterable
    style="width: 430px;"
  >
    <el-option
      v-for="(item,index) in ziduanOptions"
      :key="index"
      :label="item.projectName"
      :value="item.projectName"
    />
  </el-select>
</el-form-item>

3.级联选框

<el-form-item label="选择：">
  <el-cascader
    v-model="formInline.algorithmId"
    :options="modelOptions"
    :props="{ value: 'id', label: 'name', multiple: true, emitPath: false,}" //
    collapse-tags //
    filterable
    placeholder="请选择"
    size="mini"
    style="width: 430px;"
    @change="modelChange"
  >
    <template slot-scope="{ node, data }">
      <span>{{ data.name }}</span>
      <span v-if="!node.isLeaf">({{ data.children.length }})</span>
    </template>
  </el-cascader>
</el-form-item>